I've been a fan of Simon Stålenhag long before I knew his name. By way of
The Paper Wall an HD wallpaper gallery that's sadly no longer in existence, I stumbled on a bunch of detailed paintings of idyllic countryside scenes with subtle additions of aliens. For a while these were the backgrounds of my monitors at work, and I wouldn't have a good answer to people who inevitably asked "Where's that cool picture from?".
Apparently, it's not that hard to find him, and his art is amazing. He also has a couple of books published. I have the first, Tales from the Loop, which is a collection of related pictures and a series of sci-fi themed captions for each photo. The captions are usually unrelated, though they do happen in the same universe and showcase the strange world where humanity found a new power source.